True, but … I’m an example of this, where the bars I prefer are farther than walking distance. However I could walk to 3-4, and a percentage of people probably do.
One of the things to remember about walkability is it’s always a numbers game. It can’t be everything to everyone, but the point is to make it most things for most people most of the time. I may drive to bars, but I only go rarely and my goal is a nice meal, a nice microbrew, and a great conversation. I care a lot about the quality of food and beer and am not interested in getting drunk. You may have different criteria